3:00–4:30pm Tour of SLAC National Accelerator Laboratory
5:30–6:30pm Social Hour with Appetizers
7:30pm Technical Presentation
SLAC National Accelerator Laboratory
Christina Ignarra is a Postdoctoral Research Associate at SLAC National Accelerator Laboratory. She received her PhD from MIT in 2014 on the MiniBooNE and MicroBooNE neutrino oscillation experiments. Her PhD work focused on sterile neutrino searches and optimizing light detection in liquid argon Time Projection Chambers (TPCs). Her postdoctoral work is with the LUX and LZ dark matter direct detection experiments, switching focus from detecting one weakly interacting particle to another. Her current projects include a chromatography system for removing Kr-85 from high purity xenon and conducting high voltage testing of grids for the LZ liquid xenon TPC. Her analysis focus is on characterizing non-standard nuclear responses that dark matter particles may undergo in detectors.
Dark Matter Direct Detection with the LUX-ZEPLIN Experiment
LUX-ZEPLIN (LZ) will be a 10 ton liquid zenon Time Projection Chamber (TPC) searching for dark matter particles via direct scattering from xenon nuclei. In order to achieve the desired sensitivity to these interactions, we require an extremely radiopure environment, aiming for less than 1 mBq of total radioactivity within the detector. Most of our backgrounds originate outside of the bulk xenon and are mitigated by xenon's self-shielding properties and our techniques for precision event position reconstruction and vetos. A distinct challenge, however, are background sources that are dissolved throughout the xenon, such as Kr-85 and Rn-222. This talk will present an overview of particle detection in LZ and describe our systems for xenon purification and mitigation of raioactive backgrounds.
Appetizers during social hour:
Michael's at Shoreline
2960 Shoreline Boulevard
Mountain View, CA 94043